Re: Error ret=-1 with EINTR in nbd_connect_systemd_socket_activation()

[Philippe Mathieu-Daudé]

Cc'ing qemu-block@

On 11/7/22 08:38, Motohiro Kawahito wrote:
> Hi, I’d like to connect to an encrypted QCOW2 file by 
> nbd_connect_systemd_socket_activation(), but I got ret=-1 with EINTR.
>
> The arg parameter I used is
>
> qemu-nbd --object secret,id=sec0,data=abc123 --image-opts 
> driver=qcow2,encrypt.format=luks,encrypt.key-secret=sec0,file.filename=/tmp/empty.qcow2
>
> Can you find what a problem is? The version of qemu-nbd is
>
> $ qemu-nbd -V
>
> qemu-nbd 4.2.1 (Debian 1:4.2-3ubuntu6.23)
>
> I created this encrypted QCOW2 image by the following command.
>
> qemu-img create --object secret,id=sec0,data=abc123 -f qcow2 -o 
> encrypt.format=luks,encrypt.key-secret=sec0 /tmp/empty.qcow2 8539292672
>
> Note that I can connect to a normal QCOW2 file by this function without 
> any error. (arg: qemu-nbd -f qcow2 /tmp/normal.qcow2)